Teaching system

• US 3,315,375 A
• Filed: 05/19/1964
• Issued: 04/25/1967
• Est. Priority Date: 05/19/1964
• Status: Expired due to Term

• Current Assignee: William L. Heinz
• Original Assignee: William L. Heinz
• Inventors: Heinz, William L.
• Application Number:
  US04/368,528
• Time in Patent Office: 1,071 Days
• US Class Current: 434/320
• CPC Class Codes: G09B 5/06 with both visual and audible presentation of the material to be studied

Claims

1. A PORTABLE CARREL FOR USE IN AUDIO TEACHING SYSTEMS WHICH COMPRISES A BASE STORAGE CASE HAVING OPPOSED SIDE WALLS, A LID FOR SAID CASE, SAID LID HAVING A PAIR OF OPPOSED PARALLEL EDGES, MEANS FOR LOCKING SAID LID TO SAID CASE IN A CLOSED POSITION, MEANS FOR MOUNTING SAID LID NORMAL TO SAID CASE ALONG RESPECTIVE COOPERATIVE MARGINAL EDGES THEREOF IN AN OPEN POSITION, A PAIR OF ACOUSTICAL PANELS, EACH OF SAID PAIR OF PANELS BEING ADAPTED TO BE MOUNTED RESPECTIVELY ALONG ONE EDGE THEREOF TO SAID OPPOSED PARALLEL EDGES SUBSTANTIALLY NORMAL TO SAID LID WHEN SAID LID IS IN THE OPEN POSITION, THE VIS-A-VIS FACES OF SAID PANELS BEING ACOUSTICALLY TREATED TO PROVIDE AN ACOUSTICAL CHAMBER THEREBETWEEN, SAID STORAGE CASE CONTAINING ELECTRONIC RECEIVING AND RECORDING EQUIPMENT COMPRISING A RECEIVER MEANS FOR RECEIVING A RADIO SIGNAL, AMPLIFIER MEANS FOR SAID RADIO SIGNAL, A MICROPHONE MEANS FOR PROVIDING AN INPUT SIGNAL TO SAID AMPLIFIER, A TAPE RECORDER MEANS ELECTRICALLY CONNECTED TO SAID AMPLIFIER AND ADAPTED FOR RECORDING SAID RADIO SIGNAL AND SAID INPUT SIGNAL, REPRODUCER MEANS FOR AUDIBLY REPRODUCING THE OUTPUT FROM SAID TAPE RECORDER, AND MEANS FOR PROVIDING POWER TO SAID ELECTRONIC CIRCUIT.